Henry ashton ramsay



' (No Model.)

H. A. RAMSAY.

DUMMY LoGoMoTIVB. No. 441,583. Patented Nov. 25, 1890.

UNITED STATES PATENT OFFICE.

HENRY ASHTON RAMSAY, OF BALTIMORE, MARYLAND, ASSIGNOR TO IVILLIAMDUGDALE, ELISHA H. PERKINS, RICHARD S. ALBERT, AND

OIIAUNOEY M. BENNINGHAUS.

DUMMY LOCOMOTIVE.

SPECIFICATION forming part of Letters Patent No.441,583, dated November25, 1890.

` Application filed .Tune 4,1890. Serial No. 354,219. (No model.)

To all whom. t may concern:

Beit known that I, HENRY ASHTON RAMsAY, a `citizen of the United States,residing at Baltimore city, State of Maryland, have invented a new anduseful Improvement in the Type of Locomotives known as Dummiesj of whichthe following is a specification.

My invention relates to improvements in dummy locomotives intended tooperate without noise from the en gine-exhaust and to use a smokelessfuel, coke, or anthracite coal, the object of my invention being toprevent the noise ensuing` from the use of steam-exhaust to produce adraft and the appearance of smoke. I attain these obj ects by themechanism illustrated in the accompanying` drawings, in which- Figure lis a side elevation shown in section, and Fig. 2 is a transverse sectioncut through A B.

Similarletters refer to similar parts throughout both views.

In Fig. l, letter C is an ordinary form of locomotive-boiler.

D is a condenser arranged to be placed over the boiler and to extenddown the sides, forming a saddle or box constructed of light iron madesteam-tight under a slight pressure of a few pounds to the square inch.Horizontal tubes pass through the condenser. (Shown at R.) Below thesides of the condenser are two water-tanks A. A rotary blower is shownat E; inlet-pipes, through which the blower is supplied with air at G;discharge-pipe from blower to deliver air under the grate of theboiler-furnace shown at N; funnel-inlets to blower eduction-pipes shownat H; connecting vertical pipes, aording communication between thecondenser and tanks, shown at P. Pipes shown at M are small vapor-pipesled from the top of the water-tanks to the smokepipe, with open mouths,their object being to prevent the accumulation of pressure in thecondenser or tanks and to carry off any vapor that may be uncondensed.The other parts of the locomotive are common to ordinary locomotives, soit will not be necessary to describe them here. The condenser hasseveral shelf or diaphragm pla-tes provided at f, ar-

ranged so as to detain the exhaust-steam in its passage upward from itspoint of entrance to the condenser. The steam is thus made to circulatefreely around the tubes, through which air is caused to circulate by thepassage of the locomotive through the atmosphere, the tubes at the frontends of the condenser being turned outward and open, so as to collectand draw in as much air as possible, and this circulation of the airinside the tubes keeps them cool and causes the steam to be condensed asit comes in contact with their surfaces. The circulation of the air isalso assisted, especially when the locomotive is standing still orrunning with the wind,by the blower drawing air through the tubes, otherand cooler air having to come into the condenser-tubes to take the placeof that withdrawn by the blower. The blower will be driven by achain-band, either from a pulley on the car-axle or by a smallindependent engine, and the ofce of the blower will be, first, to givean artificial draft to the furnace, and, secondly, to promote thecirculation of air through the tubes, and this air, having been heated,will be more effective than cold air in supporting the combustion in thefurnace.

I am aware that prior to my invention of improvement in condensingapparatus for dummy locomotives other schemes have been devised andpatented for accomplishing the condensation of steam and other gases,and fans and blowers used for exhausting the gases from the smoke-pipe,&c. Ido not therefore claim any of the foregoing devices, nor thecondenser, blower, or tanks broadly; but

WhatI do claim as my invention, and desire to secure by Letters Patent,is-

l. The combination, in a dummy locomotive, of an atmospheric horizontaltubular eX- haust-steamsurface condenser, constructed as shown, inconjunction with a rotary blower E, placed in the rear of the ash-pan ofthe boiler connected with funnel-ended suction-pipes, substantially asdescribed.

2. In dummy steam-locomotives, the combination of exhaust-steam pipes T,entering a tubular air-surface condenser D, containing horizontalshelf-plates or partial diaphragms for detaining and directing thecourse of the moted bythe movement of the locomotive and steam, saidcondenser having open communithe suction effect of the blowell E, allsubstanoatou with the Water-tanks A and provided tially as described.

with a discharge-vapor pipe M, preventing an i HENRY ASHTON RAMSAY.

accumulation of pressure iu the condenser; Vtnesses: also open-endedinlet-tubes for Circulating EDWARD EDGAR THOMPSON, cold air, the passageof the same being pro- II. BERRY MANAHAm

